Etymology

Cadillac

Ca·dil·lac
C3A1D2I1L1L1A1C3

Today it means: Describing a brand representing the most luxurious or highest quality example in its class. (derived from the GM car brand Cadillac) Full definition →

French Cadillac ← Occitan Cadilhac
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The story

  1. Occitan · derived fromCadilhac
  2. French · borrowed fromCadillac
  3. English todayCadillac

From French Cadillac, from Occitan Cadilhac. Most places or objects named Cadillac are named for Antoine Laumet de La Mothe, sieur de Cadillac, a French explorer who founded the eponymous city in Maine and later the city of Detroit, Michigan.

Etymology from Wiktionary, CC BY-SA 4.0.